I had one like that this year, too--assume it is in fact a boy with tiny hemipenes.

I mis-sexed him as a girl first, and then tentatively re-sexed him as a boy...it got easier as he got older, but he's just plain difficult to properly pop, and his penes are small and don't want to extend fully when you pop him. I understand that size doesn't count, and they can still get the job done, though... <lol>